EP0406705A3 - Liquid crystal apparatus and chiral smectic liquid crystal composition for use therein - Google Patents

Liquid crystal apparatus and chiral smectic liquid crystal composition for use therein Download PDF

Info

Publication number
EP0406705A3
EP0406705A3 EP19900112366 EP90112366A EP0406705A3 EP 0406705 A3 EP0406705 A3 EP 0406705A3 EP 19900112366 EP19900112366 EP 19900112366 EP 90112366 A EP90112366 A EP 90112366A EP 0406705 A3 EP0406705 A3 EP 0406705A3
Authority
EP
European Patent Office
Prior art keywords
liquid crystal
voltage
electrode
electrodes
chiral smectic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19900112366
Other versions
EP0406705A2 (en
EP0406705B1 (en
Inventor
Masahiro C/O Canon Kabushiki Kaisha Terada
Masataka C/O Canon Kabushiki Kaisha Yamashita
Shosei C/O Canon Kabushiki Kaisha Mori
Shinichi C/O Canon Kabushiki Kaisha Nakamura
Kenji C/O Canon Kabushiki Kaisha Shinjo
Kazuharu C/O Canon Kabushiki Kaisha Katagiri
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Publication of EP0406705A2 publication Critical patent/EP0406705A2/en
Publication of EP0406705A3 publication Critical patent/EP0406705A3/en
Application granted granted Critical
Publication of EP0406705B1 publication Critical patent/EP0406705B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/02—Liquid crystal materials characterised by optical, electrical or physical properties of the components, in general
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3622—Control of matrices with row and column drivers using a passive matrix
    • G09G3/3629—Control of matrices with row and column drivers using a passive matrix using liquid crystals having memory effects, e.g. ferroelectric liquid crystals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/06—Details of flat display driving waveforms
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/041—Temperature compensation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Liquid Crystal Substances (AREA)

Abstract

A liquid crystal apparatus includes: a liquid crystal cell comprising a pair of substrates having thereon a first electrode and a second electrode, respectively, disposed opposite to each other, and a chiral smectic liquid crystal showing a first and a second orientation state disposed between the first and second electrodes, and a drive circuit for applying voltages between the first and second electrodes including voltages ¦VS¦ and ¦VI¦ which provide voltages VA and VB (VB > VA) satisfying the relationship of: ¦(VA-VB)/(VA+VB)¦ > 0.1 at 40 DEG C, wherein VA is a minimum peak value of a voltage ¦VS¦ + ¦VI¦ (at a constant pulse width) capable of inverting the first orientation state of the chiral smectic liquid crystal into the second orientation state when a voltage pulse is applied between the first and second electrodes to cause the first orientation state of the chiral smectic liquid crystal and then the voltage ¦VS¦ + ¦VI¦ is applied between the first and second electrodes as a combination of a voltage ¦VS¦ applied to the first electrode and a voltage -¦VI¦ applied to the second electrode; and VB is a value of ¦VS¦ + ¦VI¦ calculated based on a maximum peak value of a voltage ¦VS¦ - ¦VI¦ (at a constant pulse width) capable of maintaining the first orientation state of the chiral smectic liquid crystal when a voltage pulse is applied between the first and second electrodes to cause the first orientation state and then the voltage ¦VS¦ - ¦VI¦ is applied between the first and second electrodes as a combination of a voltage ¦VS¦ applied to the first electrode and a voltage ¦VI¦ applied to the second electrode.
EP90112366A 1989-06-30 1990-06-28 Liquid crystal apparatus and chiral smectic liquid crystal composition for use therein Expired - Lifetime EP0406705B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP169422/89 1989-06-30
JP1169422A JP2592958B2 (en) 1989-06-30 1989-06-30 Liquid crystal device

Publications (3)

Publication Number Publication Date
EP0406705A2 EP0406705A2 (en) 1991-01-09
EP0406705A3 true EP0406705A3 (en) 1992-09-30
EP0406705B1 EP0406705B1 (en) 1995-08-30

Family

ID=15886300

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90112366A Expired - Lifetime EP0406705B1 (en) 1989-06-30 1990-06-28 Liquid crystal apparatus and chiral smectic liquid crystal composition for use therein

Country Status (6)

Country Link
US (1) US5119219A (en)
EP (1) EP0406705B1 (en)
JP (1) JP2592958B2 (en)
AT (1) ATE127261T1 (en)
DE (1) DE69021962T2 (en)
ES (1) ES2076262T3 (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2847331B2 (en) * 1991-04-23 1999-01-20 キヤノン株式会社 Liquid crystal display
JP3491926B2 (en) * 1992-09-01 2004-02-03 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Light modulator
GB2271211A (en) * 1992-10-03 1994-04-06 Central Research Lab Ltd Addressing a ferroelectric liquid crystal display.
DE69317640T2 (en) * 1992-12-28 1998-07-30 Canon Kk Method and device for a liquid crystal display
US5446570A (en) * 1993-04-27 1995-08-29 Canon Kabushiki Kaisha Liquid crystal display with projecting portions on the electrodes
US5592190A (en) * 1993-04-28 1997-01-07 Canon Kabushiki Kaisha Liquid crystal display apparatus and drive method
JP2932229B2 (en) * 1993-06-04 1999-08-09 キヤノン株式会社 Liquid crystal display device
JP3069004B2 (en) * 1993-06-30 2000-07-24 チッソ株式会社 Smectic C liquid crystal composition and liquid crystal display device
GB9324710D0 (en) * 1993-12-02 1994-01-19 Central Research Lab Ltd Analogue greyscale addressing
JP2942161B2 (en) * 1993-12-28 1999-08-30 キヤノン株式会社 Liquid crystal alignment treatment method, liquid crystal element manufacturing method using the method, and liquid crystal element
KR0147590B1 (en) * 1994-06-03 1998-12-01 윤종용 Matrix type lcd drive apparatus and method
US5728318A (en) * 1994-11-10 1998-03-17 Canon Kabushiki Kaisha Liquid crystal composition, liquid crystal device and liquid crystal display apparatus
DE69517338T2 (en) * 1994-12-29 2000-11-30 Chisso Corp., Osaka LIQUID CRYSTALLINE SMEKTIC COMPOSITION AND LIQUID CRYSTAL DEVICE
US5785890A (en) * 1995-10-12 1998-07-28 Canon Kabushiki Kaisha Liquid crystal composition, liquid crystal device, and liquid crystal display apparatus using same
US5858482A (en) * 1996-07-26 1999-01-12 Canon Kabushiki Kaisha Liquid crystal device and process for production thereof
GB2326509A (en) * 1997-06-20 1998-12-23 Sharp Kk Addressing liquid crystal displays
KR20000069246A (en) * 1997-10-01 2000-11-25 마치오 나카지마 Anti-ferroelectric liquid crystal display
JP3478717B2 (en) 1997-10-27 2003-12-15 キヤノン株式会社 Adjustment method of liquid crystal display
KR100457189B1 (en) * 1999-12-27 2004-11-16 마쯔시다덴기산교 가부시키가이샤 Liquid crystal display and driving method thereof
US7284100B2 (en) * 2003-05-12 2007-10-16 International Business Machines Corporation Invalidating storage, clearing buffer entries, and an instruction therefor
KR101133753B1 (en) * 2004-07-26 2012-04-09 삼성전자주식회사 Liquid crystal display including sensing element
JP5769353B2 (en) 2007-07-13 2015-08-26 チェイル インダストリーズ インコーポレイテッド Adhesive composition and optical member
US9957213B2 (en) * 2013-07-30 2018-05-01 Semiconductor Energy Laboratory Co. Organic compound, liquid crystal composition, liquid crystal element, and liquid crystal display device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0285402A2 (en) * 1987-03-31 1988-10-05 Canon Kabushiki Kaisha Display device

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4367924A (en) * 1980-01-08 1983-01-11 Clark Noel A Chiral smectic C or H liquid crystal electro-optical device
JPS56107217A (en) * 1980-01-31 1981-08-26 Canon Inc Calescence point scanning element
US4655561A (en) * 1983-04-19 1987-04-07 Canon Kabushiki Kaisha Method of driving optical modulation device using ferroelectric liquid crystal
JPS60107023A (en) * 1983-11-15 1985-06-12 Canon Inc Image forming device
DE3501982A1 (en) * 1984-01-23 1985-07-25 Canon K.K., Tokio/Tokyo METHOD FOR DRIVING A LIGHT MODULATION DEVICE
US4778260A (en) * 1985-04-22 1988-10-18 Canon Kabushiki Kaisha Method and apparatus for driving optical modulation device
GB2178581B (en) * 1985-07-12 1989-07-19 Canon Kk Liquid crystal apparatus and driving method therefor
JPS62150334A (en) * 1985-12-25 1987-07-04 Canon Inc Driving method for optical modulation element
US4770502A (en) * 1986-01-10 1988-09-13 Hitachi, Ltd. Ferroelectric liquid crystal matrix driving apparatus and method
JP2505756B2 (en) * 1986-07-22 1996-06-12 キヤノン株式会社 Driving method of optical modulator
JPS63116128A (en) * 1986-11-04 1988-05-20 Canon Inc Driving method for optical modulating element
EP0293910B1 (en) * 1987-06-04 1994-02-02 Canon Kabushiki Kaisha Liquid crystal composition and liquid crystal device containing same
US5250217A (en) * 1988-06-24 1993-10-05 Canon Kabushiki Kaisha Ferroelectric chiral smectic liquid crystal composition and liquid crystal device using same
ATE142246T1 (en) * 1988-06-24 1996-09-15 Canon Kk CHIRAL SMECTIC LIQUID CRYSTAL COMPOSITION AND DEVICE COMPRISING SUCH COMPOSITION

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0285402A2 (en) * 1987-03-31 1988-10-05 Canon Kabushiki Kaisha Display device

Also Published As

Publication number Publication date
ES2076262T3 (en) 1995-11-01
ATE127261T1 (en) 1995-09-15
JP2592958B2 (en) 1997-03-19
DE69021962D1 (en) 1995-10-05
DE69021962T2 (en) 1996-02-15
JPH0335220A (en) 1991-02-15
US5119219A (en) 1992-06-02
EP0406705A2 (en) 1991-01-09
EP0406705B1 (en) 1995-08-30

Similar Documents

Publication Publication Date Title
EP0406705A3 (en) Liquid crystal apparatus and chiral smectic liquid crystal composition for use therein
DE69131258D1 (en) Liquid crystal element and liquid crystal device using this element
CA2006070A1 (en) Method and apparatus for driving a liquid crystal display panel
ATE121204T1 (en) LIQUID CRYSTAL DEVICE.
CA2088934A1 (en) High contrast distorted helix effect electro-optic devices and tight ferroelectric pitch ferroelectric liquid crystal compositions useful therein
EP0216168A3 (en) Method of driving a display panel
EP0553727A3 (en) Ferroelectric liquid crystal device and treatment method therefor
EP0500328A3 (en) Display apparatus
US7061462B1 (en) Driving scheme and electronic circuitry for the LCD electrooptical switching element
DE69226670D1 (en) Liquid crystal device
TW366433B (en) Light modular using a liquid crystal thick cell
JPS6418194A (en) Driving of liquid crystal display device
KR100192648B1 (en) Dhf liquor cell
EP0447565A4 (en) 1,3-dioxane derivative and liquid-crystal composition containing the same
EP0864911A3 (en) Ferroelectric liquid crystal electro-optic apparatus and manufacturing method thereof
JPS54121153A (en) Driving method of liquid crystal display device
ES8707053A1 (en) Temperature compensation in active substrate electro-optic displays.
JPS6424234A (en) Driving method for liquid crystal matrix panel
JPS5274296A (en) Liquid crystal driving circuit
JPS6426823A (en) Ferroelectric liquid crystal electro-optic device
JPS54111298A (en) Driving circuit of liquid crystal display device
JPS5458456A (en) Driving device of electrochromic display body
JPS5268429A (en) Liquid crystal display device
JPS5798863A (en) Voltage sensor under photo application
JPS5551390A (en) Measuring device for electronic watch

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19900628

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE

17Q First examination report despatched

Effective date: 19931026

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19950830

Ref country code: DK

Effective date: 19950830

Ref country code: BE

Effective date: 19950830

Ref country code: AT

Effective date: 19950830

REF Corresponds to:

Ref document number: 127261

Country of ref document: AT

Date of ref document: 19950915

Kind code of ref document: T

REF Corresponds to:

Ref document number: 69021962

Country of ref document: DE

Date of ref document: 19951005

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2076262

Country of ref document: ES

Kind code of ref document: T3

ITF It: translation for a ep patent filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19960630

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20030604

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20030610

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20030619

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20030625

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20030630

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20030702

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20030710

Year of fee payment: 14

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040628

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040629

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040629

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040630

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050101

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050101

EUG Se: european patent has lapsed
EUG Se: european patent has lapsed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20040628

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050228

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20050101

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050628

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20040629